Heptanoic acid

  • Heptoic acid
  • Heptylic acid
  • Enanthic acid
Formula
CH3(CH2)5COOH
Structure
Description
Clear, colorless, oily liquid with a disagreeable rancid or faint, tallow-like odor.
Uses
Organic synthesis, production of special lubricants for aircraft & brake fluids.

Registry Numbers and Inventories.
CAS
111-14-8
EC (EINECS/ELINCS)
203-838-7
EC Index Number
607-196-00-2
EC Class
Corrosive
S 26 28 36/37/39 45
RTECS
MJ1575000
RTECS class
Other
UN (DOT)
3265
Merck
13,4680
Beilstein/Gmelin
1744723
Beilstein Reference
4-02-00-00958
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C7H14O2
Formula mass
130.19
Melting point, °C
-10
Boiling point, °C
223
Vapor pressure, mmHg
0.06 (25 C)
Vapor density (air=1)
4.49
Saturation Concentration
Less than 100 ppm (0.01%) at 20 C (calculated)
Critical temperature
404
Critical pressure
28.42
Density
0.9200 g/cm3 (20 C)
Solubility in water
2.4 g/L
Viscosity
3.80 cp (25 C)
Surface tension
29.84 g/s2 (0 C)
Refractive index
1.42162 (20 C)
pKa/pKb
4.78 (pKa)
Partition coefficient, pKow
2.42
Heat of fusion
15.0 kJ/mol
Heat of vaporization
48.5 kJ/mol
Heat of combustion
-537 kJ/mol

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Corrosives area.
E
Handling
Wash thoroughly after handling. Use only in a well ventilated area. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Discard contaminated shoes.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Provide ventilation.
Disposal code
4
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
99
Autoignition, °C
380
Upper exp. limit, %
7.2
Lower exp. limit, %
1.1
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use water spray to keep fire-exposed containers cool. Water may be ineffective. Material is lighter than water and a fire may be spread by the use of water. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Extinguishing media: Water may be ineffective. Do NOT get water inside containers. For small fires, use dry chemical, carbon dioxide, or water spray. For large fires, use dry chemical, carbon dioxide, alcohol-resistant foam, or water spray. Cool containers with flooding quantities of water until well after fire is out.
Fire potential
This chemical is probably combustible.
Hazards
When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
3
 
Flammability
1
 
 
Reactivity
0
 

Health.
Poison_Class
F (Not subject to toxicity classification)
Exposure effects
Effects may be delayed.
   Ingestion
May cause severe and permanent damage to the digestive tract. Causes gastrointestinal tract burns. May cause perforation of the digestive tract. May cause systemic effects.
   Inhalation
Causes chemical burns to the respiratory tract. Aspiration may lead to pulmonary edema. May cause systemic effects.
   Skin
Causes skin burns. May cause skin rash (in milder cases), and cold and clammy skin with cyanosis or pale color.
   Eyes
Causes eye burns. May cause chemical conjunctivitis and corneal damage.

First aid
 
   Ingestion
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
   Skin
Get medical aid. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Destroy contaminated shoes.
   Eyes
Get medical aid. Do NOT allow victim to rub or keep eyes closed. Extensive irrigation is required (at least 30 minutes).

Transport.
UN number
3265
Response guide
Hazard class
8
Packing Group
I; II; III
 
USCG CHRIS Code
HEP
 
HS Code
2915 90 80
 
Std. Transport #
4931240
 
IMO Chemical Code
18
IMO Pollution Category
D